The following first look at the ABC drama’s Sept. 24 opener, titled “After the Storm,” shows Castle & Co. attempting to piece together a shredded file that may contain a clue about the murder of Beckett’s mother.

“I don’t know if [that mystery] is going to get resolved [this season],” hedged Nathan Fillion last month at Comic-Con. “That whole plot line is such a wonderful locomotive that keeps things moving.”